CN104245187B - For the piston of cold-chamber die casting machine - Google Patents
For the piston of cold-chamber die casting machine Download PDFInfo
- Publication number
- CN104245187B CN104245187B CN201280072536.3A CN201280072536A CN104245187B CN 104245187 B CN104245187 B CN 104245187B CN 201280072536 A CN201280072536 A CN 201280072536A CN 104245187 B CN104245187 B CN 104245187B
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- China
- Prior art keywords
- piston
- ring
- sealing ring
- seat portion
- annular
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/2015—Means for forcing the molten metal into the die
- B22D17/203—Injection pistons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/2015—Means for forcing the molten metal into the die
- B22D17/2038—Heating, cooling or lubricating the injection unit
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
For a piston for cold-chamber die casting machine, comprising: piston only, end at the front place with the front surface promoting motlten metal; And at least one ring seat portion, described ring seat portion makes around described body, and is suitable for holding corresponding sealing ring.In the intermediate annular part of the lower surface in ring seat portion, make annular distribute passage, this annular is distributed passage and is communicated with the described front surface of piston by least two intercommunicating pores, and intercommunicating pore is formed in piston only to flow under ring for motlten metal and distributes in passage.Described intercommunicating pore is tilt and have towards the through cross section distributing passage increase relative to piston axis.
Description
Technical field
The present invention relates to die casting machine, and particularly for the piston of the press of cold chamber die casting.
Background technology
In cold-chamber die casting machine, the injection ram that known use is such, described piston has steel body or copper body and is assemblied at least one the outside seal ring in the seat portion of piston head.
The example of such piston describes in US5233912.
In the applicant WO2009125437 under one's name, describe a kind of piston for cold-chamber die casting machine, this piston comprises: body, stops at front place with the front surface of extrusion molten metal; And at least one sealing ring, be arranged in the corresponding annular seats made around described body.Being run through by least two passages at least partially of the lower surface in seat portion, described passage is mainly upper in a longitudinal direction to be extended and described passage stretches out at the front place of the described front surface of piston and flows under ring for motlten metal.
Preferably, described passage almost extends to the center line in the seat portion of ring from the front surface of piston, thus motlten metal is mainly advanced towards the center of gravity of sealing ring 16.
Like this, metal flow is to seat portion, solidification, and form continuous print and thicken, this thickens and is radially promoted outward by hoop, thus repairs wearing and tearing gradually, makes its any distortion being suitable for piston container and therefore protects the latter.
But, draw by experiment, use above-mentioned piston, motlten metal through passage can't arrive the middle section in ring seat portion, that is, major sedimentary under the center of gravity of ring, and in certain conditions of use, around the whole lower surface that successfully can not be distributed in ring in an uniform manner.In other words, in some cases, the metal left from the passage passed under ring does not have enough thrust to continue flowing towards adjacent passage, but tends to the end solidification of the passage only left at it.Therefore, some regions causing inhomogeneous deformation are mainly arranged in by the radial thrust caused at the metal of the current downflow of ring.Therefore, the wearing and tearing reparation around ring is uneven, and and unrealized inner surface ring self perfection being fitted to the container that piston slips into.
In addition, such distortion of ring then causes phase propulsive thrust on the curing metal under it or reaction force, which prevent the flowing of the new motlten metal under curing metal.
For this reason, it is to be noted that, in hot chamber machine, piston is always immersed in the metal bath of liquid condition, and in cold house's application, whenever piston be back to position and mould backward open time, cooling system makes to form metal rising head (riser, standpipe) in the front of the front surface of piston, and when above-mentioned piston, make to enter into passage and to be positioned under ring metal-cured.One of being formed in the difficulty that the above-mentioned piston reparation for cold chamber die casting weares and teares is such fact, namely, if be desirably in each work period to make new metal in the current downflow of ring to repair wearing and tearing gradually, then in time operating mould to remove foundry goods, the metal solidified in the channel must also will keep being attached to metal rising head (it is attached to this part).Be clear that, around piston periphery with uniform as far as possible mode by metal restriction under sealing ring and the object be therefore in the position backward of the front surface of piston, and remove rising head so that the demand discharging the flow channel of the metal under ring in each cycle is inconsistent.
Such as, known in some cases, use above-mentioned piston, the metal solidified in the channel can't remove completely but be retained in such channel interior together with metal rising head, thus hinders the metal in subsequent cycle under ring correctly to flow into.
As described in, these problems can not occur in hot chamber machine, this is because entered deliberately manufacture or be present in any crack in piston or the metal in path can not solidify.
Summary of the invention
Therefore object of the present invention is propose a kind of piston for cold-chamber die casting machine, and it is aforementioned restricted that it can overcome according to the piston of prior art.
Such object by according to of the present invention for cold-chamber die casting machine piston realize, described piston comprises: piston only, stops at front place with the front surface promoting motlten metal; And at least one ring seat portion, described ring seat portion makes around described body, and is suitable for holding corresponding sealing ring, and wherein said ring seat portion comprises lower surface, wherein :-in the intermediate annular part of described lower surface, made annular distributes passage;-described annular is distributed passage and is communicated with the described front surface of described piston by least two intercommunicating pores, described intercommunicating pore is formed in described piston only and flow in described distribution passage under described ring for described motlten metal, and described intercommunicating pore is tilt and have the through cross section increased towards described distribution passage relative to piston axis.
Accompanying drawing explanation
By referring to the following description that accompanying drawing provides in the mode of schematic and nonrestrictive example, other feature and advantage according to piston of the present invention will be more obvious, in the accompanying drawings:
Fig. 1 is the front view according to inventive piston;
Fig. 1 a is the zoomed-in view of the piston portion in the square frame C in Fig. 1;
Fig. 1 b is the stereogram of piston;
Fig. 2 is the axial cross section that the piston in Fig. 1 intercepts along line A-A;
Fig. 2 a is the zoomed-in view of the piston portion in the square frame B in Fig. 2;
Fig. 3 is the axial cross section of the piston with the sealing ring that close piston head is installed;
Fig. 4 shows the piston be arranged in stem (stem);
Fig. 5 is the axial cross section intercepted along line A-A of the piston stem assembly in Fig. 4;
Piston at the end of Fig. 6 shows and is in the work period, has wherein illustrated the metal solidified under sealing ring in axial cross section;
Fig. 6 a is the zoomed-in view of the piston portion in the details B in Fig. 6;
Fig. 7 shows zoomed-in view identical with Fig. 6 a in subsequent cycle process;
Fig. 8 and Fig. 9 respectively illustrate according to of the present invention in an embodiment variant with the exploded perspective view of the piston of sealing ring and axial, cross-sectional view;
Figure 10 and Figure 11 shows stereogram according to the piston in another embodiment variant of the present invention and front view;
Figure 12 is the front view being equipped with sealing ring of the piston in Figure 10 and Figure 11, and
Figure 13 is the axial, cross-sectional view intercepted along the line A-A in Figure 10 of the piston in figure above.
Detailed description of the invention
With reference to accompanying drawing, reference number 10 represents the piston with cylindrical body 11, and this cylindrical body is preferably steel.Body 11 ends at front, that is, end on the sidepiece of the pressing motlten metal in head 12.Head 12 is limited by the front surface 13 of pressing motlten metal.Described front surface 13 can be smooth or can such as illustrate in figs. 8 and 9 for what protrude, be beneficial to the disengaging of metal rising head.
In a preferred embodiment, described body 11 is assembled to (such as screwing) in stem 120.Stem 120 ends at front, and front is with post (peg) 121, and this post is such as coupled to body 11 by screwing.Described post 121 limits a cooling chamber 140 with the inside of described body 11.Stem 120 is axially run through by passage 122, and this passage can transmit cooling liquid in inside, room 140.
Advantageously, the head 12 of piston 10 has axial aperture 12 ', is inserted with copper backing 150 in this axial aperture, and this copper backing contributes to the cooling increasing described head 12, and described head is piston in use overheated maximum part.
In the forward portion of the close head 12 of the body 11 of piston, be provided with at least one sealing ring 16, described sealing ring is preferably copper alloy.
Sealing ring 16 is contained in corresponding ring seat portion 18, and this ring seat portion has annular extension and makes around body 11.Ring seat portion 18 comprises cylindrical bottom surface 19.
In a preferred embodiment, ring seat portion 18 is limited backward by the rear shoulder 20 of annular abutment, and the rear shoulder of this annular abutment is formed on the body 11 of piston.More preferably, ring seat portion 18 is formed as the position backward of the front surface 13 of the body 11 being arranged in piston and is limited by the rear shoulder 20 and front shoulder 22 that are formed in described body 11.In other words, the lower surface 19 in ring seat portion 18 is reduce relative to the outer cylindrical surface of piston 10.In the preferred embodiment, the head of piston 10 is in the forward portion extended between front surface 13 and front shoulder 22 of piston.
But, as set forth hereinafter, do not exist any object in order to prevent ring seat portion 18 from extending forward enough far away to such an extent as to concordant with the front surface 13 of piston; In this case, piston head 12 is in fact consistent with described front surface 13.
In a preferred embodiment, sealing ring 16 is type with longitudinal splitting portion (split) 17 and preferably step-like, to be assembled in body 11 process and to be broadened flexibly by during motlten metal radial direction pressing in its current downflow in use procedure.The step shape in longitudinal splitting portion 17 also prevents the transformation of motlten metal by such division portion, thus realizes best wiper seal.
Distribute passage 24 to be formed in the intermediate annular part 19a of the lower surface 19 in ring seat portion 18.Described distribution passage 24 has annular extension, that is, coaxially extend with piston axis X.In other words, the lower surface 24 ' lower than the lower surface 19 in ring seat portion 18 of described distribution passage determination passage.
Thus, the lower surface 19 in ring seat portion 18 comprises: rear annular section 19b, for supporting the corresponding rear portion of sealing ring 16; Described intermediate annular part 19a, distributes passage 24 and is formed in wherein; And front annular section 19c, for supporting the corresponding forward portion of sealing ring 16.
Preferably, annular section 19b in rear has larger axial extension compared to front annular section 19c.In addition, preferably, compared to rear annular section 19b and the front annular section 19c of the lower surface 19 in ring seat portion 18, distribute passage 24 and there is less axial width.
In addition, in a preferred embodiment, distribute passage 24 and be equal in the degree of depth or be less than ring seat portion 18, that is, for the degree of depth on the outer cylindrical surface of rear annular section 19b and front annular section 19c opposing pistons.
In addition, in a preferred embodiment, passage 24 is connected to the lower surface 19 in ring seat portion 18 rear annular section 19b by taper connection surface 26 (such as having the gradient of approximate 30 degree) is distributed.Advantageously, as further described hereinafter, described taper connection surface 26 roughly ends at the centre of the axial width in ring seat portion 18, under the center line being namely roughly positioned at sealing ring 16.
Distribution passage 24 is communicated with the front surface 13 of piston by least two intercommunicating pores 30 made in piston only 11.In an embodiment shown in Fig. 1 to Fig. 7, there is the intercommunicating pore 30 described in three, it is spaced at equal intervals angularly in relation to one another.Such intercommunicating pore 30 allows motlten metal to flow into distribute in passage 24 and therefore in the current downflow of sealing ring 16, realize the repairing effect of the wearing and tearing of sealing ring with the continuous circular shape layer by forming curing metal under sealing ring 16.Such curing metal layer radially by sealing ring to extrapolation, thus repair thinner part (Fig. 7).
Different from the piston channel (it is radially outwards opened) above with reference to description of the prior art, described intercommunicating pore 30 is integrally formed in piston only 11, and the inlet drilling 32 of motlten metal in the front surface 13 being formed in piston and being formed in distribute in passage 24 or towards the motlten metal of this distribution passage exit apertures 34 between.
Intercommunicating pore 30 is what tilt relative to piston axis X.In other words, the axis of inlet drilling 32 distributes along the first periphery coaxial with piston axis X, and the exit apertures 34 of described intercommunicating pore is made around the second periphery, and the first periphery has less diameter compared to the second periphery.Such as, intercommunicating pore 30 becomes the angle of about 30 ° with piston axis X-shaped.Such as, inlet drilling 32 is formed in the crown part of the annular around axial aperture 12 ' of front surface 13.
In addition, described intercommunicating pore 30 has towards the penetrating section distributing passage 24 increase, i.e. the penetrating section of taper.Such as, the solid angle (solidangle) determined by intercommunicating pore 30 is about 10 °.
According to preferred embodiment, the exit apertures 34 of intercommunicating pore 30 to be formed in the front annular section 19c of lower surface 19 and to distribute passage 24 towards annular and opens.Therefore the be connected exit apertures 34 in hole 30 of described front annular section 19c interrupts.
In more detail, each exit apertures 34 is connected to by the arch connecting wall 35 disperseed towards described distribution passage 24 and distributes passage 24.In a preferred embodiment, described connecting wall 35 is identical front sidewall 24 " the lower surface 19 relative to ring seat portion 18 front annular section 19c for limit in front and distribute the part of passage 24.In other words, at each exit apertures 34 place, distribute the front sidewall 24 of passage 24 " be formed in the lower annular section 19c center dant of the lower surface 19 in ring seat portion 18, as such as in fig 1 a shown in.By such mode, each exit opening 34 is apparent on an exit surface, this exit surface with distribute passage 24 lower surface 24 ' copline and be formed in the front annular section 19c of the lower surface 19 in ring seat portion 18.
What illustrate in figs. 8 and 9 is specially adapted in a piston embodiment variant of vacuum pressing, and the body 111 of piston is provided with the lubricating loop 112 manifested under sealing ring 116, and this lubricating loop is such as in the rear portion place in ring seat portion 118.In a preferred embodiment, sealing ring 116 is equipped with inner annular tooth 117, and this inner annular tooth geometrically couples with the corresponding ring-shaped groove 119 be formed in ring seat portion 118.Preferably, described ring-shaped groove 119 is remotely formed relative to the hole 112 ' of leaving of the lubricating loop 112 manifested under sealing ring.Such as, leave between hole 112 ' and exit apertures 34 described in described ring-shaped groove 119 is axially formed in, be in the centre position in ring seat portion.Couple the sealing improved between sealing ring and the outer surface of piston between the tooth 117 of sealing ring and ring-shaped groove 119, thus block air circulation between which.
In addition, preferably, according in the sealing ring 116 of this embodiment, the cross section 17 ' of the step in division portion 17 described in the determination in division portion 17 is made along the part of the larger tooth of the thickness of the wherein sealing ring of sealing ring.This make to utilize division portion 17 towards lateral surfaces between possible maximum gauge to realize the advantage of the improvement sealing of sealing ring.
In a piston embodiment variant shown in Figure 10 to Figure 13, ring seat portion 18 is not formed in position neutralization backward and is embedded in piston, but the front surface 13 ending at adjacent piston or the front place flushed with this front surface.Therefore described ring seat portion 18 is only limited by rear shoulder 20.In addition, at the front ends place near ring seat portion 18, in ring seat portion 18, ring-shaped groove 40 is made.In other words described ring-shaped groove 40 runs through the forward portion 19c of the diapire 19 in ring seat portion 18.More specifically, described ring-shaped groove 40 is tangent with the front ends of exit apertures 34.Sealing ring 16 is provided with inner annular extension 161, and this inner annular extension is suitable for being coupled by shape and being inserted in described ring-shaped groove.
Except being used as the axial barrier element of sealing ring, described inner annular extension 161 is also formed the liquid metals penetrating connecting hole 30 and hinders and force described liquid metals to guide himself mainly towards the rear area of exit apertures 34 and therefore towards distribution passage 24.
It should be noted that in the embodiment shown in Fig. 8 to Figure 11, piston and sealing ring are also provided with the counter rotation device being suitable for preventing sealing ring 16 from rotating on piston.Such as, described counter rotation device is the form extending radially out portion 70, and it extends to engage with the corresponding perforate 162 be formed in ring from the diapire 19 in ring seat portion 18.Be apparent that, described in the first described embodiment, counter rotation device also can be arranged on piston.
Thus, the metal piercing intercommunicating pore 30 being in molten condition promoted by the front surface 13 of piston and by straight line path arrive distribute passage 24.Due to sealing ring 16 not with such channel engagement, but on the rear annular section 19b being shelved on the lower surface 19 in ring seat portion 18 and front annular section 19c, the metal being still in liquid condition can freely launch at distribution passage 24 upper peripheral edge, can occupy the whole annular extension of described distribution passage 24 freely equably.
This of metal that radial and scattered connecting wall 35 is conducive in distribution passage 24 is uniformly distributed, and described connecting wall is around the exit apertures 34 of intercommunicating pore 30.
Be formed in inclination in piston only and be suitable for the fracture that causes metal rising head at inlet drilling 32 place for the intercommunicating pore 30 of taper.Be different from the vertical passage piston of above reference description of the prior art (wherein, object is that the metal making to solidify in the channel is aspirated completely by rising head), use according to piston of the present invention, metal is retained in intercommunicating pore 30, thus forms certain connector.Due to the conical by its shape of communicating passage, in fact, when liquid metals is promoted by the front surface of piston, described connector is heated to merge (amalgamate) with the liquid metals acted on piston front surface and to be pushed to and distributes in passage.In other respects, intercommunicating pore 30 is formed into be conducive to certain extrusion process, by this extrusion process, the metal SM of prior cured is pushed in intercommunicating pore 30 by the metal M M (Fig. 7) entering the liquid condition of inlet drilling 32, make the metal of this prior cured depart from the wall limiting described hole 30 and make it enter and distribute passage 24, the metal of described prior cured is in the cooling of this distribution passage and solidification (Fig. 7).In other words, in each casting cycle, when being in the new metal piercing intercommunicating pore 30 of liquid condition, metal under sealing ring is deposited one occurs to reinvent with the conical by its shape of scattered connecting wall 35 due to described hole and radial direction, this makes the metal that is cured of any crack under sealing ring to occupy and sealing ring is pushed radially outwardly in a uniform way.It should be noted that the conical by its shape of intercommunicating pore 30 to prevent in such merging of the metal under sealing ring and remodelling phenomenon process metal by intercommunicating pore 30 returning towards piston head.
When curing metal SM filled described distribution passage 24 and thus under sealing ring 16, form ring time, the new metal M M from intercommunicating pore tend to not only radially direction (the arrow F1 in Fig. 7) and also axially (the arrow F2 in Fig. 7) promote the described ring of metal.Owing to distributing the existence on the taper connection surface 26 between the lower surface 24 ' of passage 24 and the rear annular section 19b of the lower surface 19 in ring seat portion 18, the becket distributed in passage 24 forms a kind of wedge shape part backward, and this wedge shape part tends to due to the reason of the described axial thrust of the new metal from intercommunicating pore sealing ring 16 is raised at point (in other words in its center of gravity) place expected.
Thus, piston according to the present invention makes it possible to the wearing and tearing that safe, reliable and effective mode repairs sealing ring.
It is apparent that when remaining in scope as defined by the appended claims, those skilled in the art can make other amendment and modification to piston according to the present invention, to meet the requirement and specific requirement that depend on the circumstances.
Claims (14)
1. for the piston of cold-chamber die casting machine, described piston comprises: piston only, and described piston only has the front surface for promoting motlten metal; And at least one ring seat portion, described ring seat portion makes around described body, and is suitable for holding corresponding sealing ring, and wherein said ring seat portion comprises lower surface, it is characterized in that:
-in the intermediate annular part of described lower surface, make annular distribution passage;
-described distribution passage is communicated with the described front surface of described piston by least two intercommunicating pores, described intercommunicating pore is formed in described piston only and flow in described distribution passage under described sealing ring for described motlten metal, and described intercommunicating pore is tilt and have the through cross section increased towards described distribution passage relative to piston axis.
2. piston according to claim 1, wherein, described lower surface comprises: rear annular support portion, for supporting the rear portion of the correspondence of described sealing ring; Described intermediate annular part; And front annular support portion, for supporting the forward portion of the correspondence of described sealing ring.
3. piston according to claim 2, wherein, the described front annular support portion of described lower surface is interrupted by the exit apertures of described intercommunicating pore, and described exit apertures is opened towards the described distribution passage of annular.
4. piston according to claim 3, wherein, each exit apertures is connected to described distribution passage by the arch connecting wall opened towards described distribution channel separation.
5. piston according to claim 1, wherein, described distribution passage is connected to the rear annular section of the lower surface in described ring seat portion by taper connection surface.
6. piston according to claim 1, wherein, the degree of depth of described distribution passage is equal to or less than the degree of depth of the annular seats of described sealing ring.
7. piston according to claim 3, wherein, described intercommunicating pore manifests on the front surface of described piston, wherein, inlet drilling distributes along the first periphery coaxial with described piston axis, the described exit apertures of described intercommunicating pore is made around the second periphery, and described first periphery has less diameter compared to described second periphery.
8. piston according to claim 1, wherein, the annular abutment shoulder that the body of described ring seat portion by described piston is made defines backward.
9. piston according to claim 1, wherein, described ring seat portion is formed in one of the front surface of the body of described piston and is limited by the front shoulder made in described body and rear shoulder in position backward.
10. piston according to claim 1, wherein, described ring seat portion terminates in the front place contiguous with the described front surface of described piston, and piston and sealing ring are provided with axial retention device, and described axial retention device is suitable for the axial translation preventing described sealing ring relative to described piston.
11. pistons according to claim 10, wherein, in described ring seat portion, make ring-shaped groove, described ring-shaped groove is suitable for being coupled by shape and receiving the inner annular extension of the correspondence made in described sealing ring.
12. pistons according to claim 11, wherein, the front ends of the exit apertures of described ring-shaped groove and described intercommunicating pore is tangent in inside.
13. pistons according to claim 1, wherein, described piston comprises counter rotation device further, and described counter rotation device is suitable for coordinating to prevent described sealing ring from rotating on described piston with the corresponding counter rotation device that described sealing ring is made.
14. pistons according to claim 13, wherein, described counter rotation device is the form extending radially out portion, described in extend radially out portion and extend, to engage with the corresponding perforate of making in described sealing ring from the diapire in described ring seat portion.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IB2012/052007 WO2013156824A1 (en) | 2012-04-20 | 2012-04-20 | Piston for cold chamber die-casting machines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104245187A CN104245187A (en) | 2014-12-24 |
| CN104245187B true CN104245187B (en) | 2016-03-16 |
Family
ID=46147534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280072536.3A Active CN104245187B (en) | 2012-04-20 | 2012-04-20 | For the piston of cold-chamber die casting machine |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US9835150B2 (en) |
| EP (1) | EP2838680B1 (en) |
| JP (1) | JP6030748B2 (en) |
| CN (1) | CN104245187B (en) |
| AR (1) | AR090142A1 (en) |
| BR (1) | BR112014025934B1 (en) |
| CA (1) | CA2868512C (en) |
| ES (1) | ES2695974T3 (en) |
| MX (1) | MX350918B (en) |
| PL (1) | PL2838680T3 (en) |
| PT (1) | PT2838680T (en) |
| RU (1) | RU2582509C1 (en) |
| WO (1) | WO2013156824A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2449165B1 (en) * | 2014-02-21 | 2014-09-02 | Alrotec Tecnology S.L.U. | Piston for cold chamber injection machines |
| IT201600087839A1 (en) * | 2016-08-29 | 2018-03-01 | Cpr Suisse S A | PISTON FOR A DIE CASTING MACHINE |
| KR200487868Y1 (en) * | 2016-08-29 | 2018-11-14 | 코프로멕 다이 캐스팅 에스.알.엘. 어 소시오 유니코 | Piston for a die-casting machine |
| IT201800020062A1 (en) | 2018-12-18 | 2020-06-18 | Copromec Die Casting S R L A Socio Unico | PISTON FOR A DIE CASTING MACHINE |
| IT202000000553A1 (en) * | 2020-01-14 | 2021-07-14 | Copromec Die Casting S R L A Socio Unico | HEAD AND LUBRICATED PISTON |
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| DE1080739B (en) * | 1957-11-16 | 1960-04-28 | Friedr Fingscheidt G M B H | Pistons for die casting machines |
| US5233912A (en) * | 1991-07-29 | 1993-08-10 | Allper Ag | Piston for forcing liquid metal out of a casting cylinder |
| EP0645205A1 (en) * | 1992-01-30 | 1995-03-29 | Nippon Light Metal Co., Ltd. | An injection apparatus for a hot-chamber die-cast machine |
| CN101421062A (en) * | 2006-04-12 | 2009-04-29 | 考普罗麦克有限公司 | Piston for cold chamber die-casting machine |
| WO2009125437A1 (en) * | 2008-04-08 | 2009-10-15 | Copromec S.R.L. | Piston for cold chamber die-casting machines |
| CN102325613A (en) * | 2009-01-21 | 2012-01-18 | 布龙多林股份有限公司 | Die casting piston and ring assembly |
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| US2485526A (en) | 1948-01-08 | 1949-10-18 | Dow Chemical Co | Die casting apparatus |
| SU1225680A2 (en) * | 1984-11-06 | 1986-04-23 | Yagin Vasilij P | Pressing plunger of die=casting machine |
| JPH08197218A (en) * | 1995-01-23 | 1996-08-06 | Nippon Light Metal Co Ltd | Injection mechanism in hot chamber die casting machine |
| JPH0970654A (en) | 1995-09-06 | 1997-03-18 | Sanki:Kk | Injection plunger in hot chamber die casting machine |
| IT250574Y1 (en) * | 2000-10-13 | 2003-09-24 | Copromec S R L | COLD CHAMBER PISTON FOR DIE CASTING |
| JP2004268067A (en) * | 2003-03-06 | 2004-09-30 | Aisin Takaoka Ltd | Plunger tip for pressure casting |
| JP4254571B2 (en) * | 2004-02-23 | 2009-04-15 | 日産自動車株式会社 | Die casting machine lubrication equipment |
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2012
- 2012-04-20 MX MX2014012674A patent/MX350918B/en active IP Right Grant
- 2012-04-20 EP EP12722869.0A patent/EP2838680B1/en active Active
- 2012-04-20 JP JP2015506315A patent/JP6030748B2/en active Active
- 2012-04-20 BR BR112014025934-8A patent/BR112014025934B1/en active IP Right Grant
- 2012-04-20 RU RU2014146563/02A patent/RU2582509C1/en active
- 2012-04-20 US US14/394,690 patent/US9835150B2/en active Active
- 2012-04-20 CN CN201280072536.3A patent/CN104245187B/en active Active
- 2012-04-20 CA CA2868512A patent/CA2868512C/en active Active
- 2012-04-20 PL PL12722869T patent/PL2838680T3/en unknown
- 2012-04-20 PT PT12722869T patent/PT2838680T/en unknown
- 2012-04-20 ES ES12722869T patent/ES2695974T3/en active Active
- 2012-04-20 WO PCT/IB2012/052007 patent/WO2013156824A1/en active Application Filing
-
2013
- 2013-02-25 AR ARP130100565A patent/AR090142A1/en unknown
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| DE1080739B (en) * | 1957-11-16 | 1960-04-28 | Friedr Fingscheidt G M B H | Pistons for die casting machines |
| US5233912A (en) * | 1991-07-29 | 1993-08-10 | Allper Ag | Piston for forcing liquid metal out of a casting cylinder |
| EP0645205A1 (en) * | 1992-01-30 | 1995-03-29 | Nippon Light Metal Co., Ltd. | An injection apparatus for a hot-chamber die-cast machine |
| CN101421062A (en) * | 2006-04-12 | 2009-04-29 | 考普罗麦克有限公司 | Piston for cold chamber die-casting machine |
| WO2009125437A1 (en) * | 2008-04-08 | 2009-10-15 | Copromec S.R.L. | Piston for cold chamber die-casting machines |
| CN102325613A (en) * | 2009-01-21 | 2012-01-18 | 布龙多林股份有限公司 | Die casting piston and ring assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| MX350918B (en) | 2017-09-25 |
| CA2868512C (en) | 2020-11-03 |
| CA2868512A1 (en) | 2013-10-24 |
| JP6030748B2 (en) | 2016-11-24 |
| PL2838680T3 (en) | 2019-01-31 |
| US20150096439A1 (en) | 2015-04-09 |
| WO2013156824A1 (en) | 2013-10-24 |
| AR090142A1 (en) | 2014-10-22 |
| BR112014025934B1 (en) | 2019-04-09 |
| ES2695974T3 (en) | 2019-01-11 |
| MX2014012674A (en) | 2015-04-08 |
| EP2838680B1 (en) | 2018-08-15 |
| EP2838680A1 (en) | 2015-02-25 |
| PT2838680T (en) | 2018-11-20 |
| CN104245187A (en) | 2014-12-24 |
| US9835150B2 (en) | 2017-12-05 |
| RU2582509C1 (en) | 2016-04-27 |
| JP2015514589A (en) | 2015-05-21 |
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